Pith Number

pith:HEGBMCK5

pith:2015:HEGBMCK5GJIBTIHM6FMPVYFJC2

not attested not anchored not stored refs pending

Search for a drifting proton--electron mass ratio from H$_2$

Edcel J. Salumbides, Julija Bagdonaite, Lex Kaper, Michael T. Murphy, Wim Ubachs

arxiv:1511.04476 v1 · 2015-11-13 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HEGBMCK5GJIBTIHM6FMPVYFJC2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:14:02.407958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

390c16095d325019a0ecf158fae0a916befcbaa675f6f119cf3d6cc0db87fb23

Aliases

arxiv: 1511.04476 · arxiv_version: 1511.04476v1 · doi: 10.48550/arxiv.1511.04476 · pith_short_12: HEGBMCK5GJIB · pith_short_16: HEGBMCK5GJIBTIHM · pith_short_8: HEGBMCK5

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HEGBMCK5GJIBTIHM6FMPVYFJC2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 390c16095d325019a0ecf158fae0a916befcbaa675f6f119cf3d6cc0db87fb23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90a0c67e62f2093f10d965a2828ee87420351dc2c581e99d9f6962c3d8499f9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-13T22:52:27Z",
    "title_canon_sha256": "4d2855db8869791afc1bda39d591840746cc01135858c961cc242c59aba6f70a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.04476",
    "kind": "arxiv",
    "version": 1
  }
}